Strainer



Dec. 27, 1932. P, s RUSSEL 1,892,190

STRAINER I Filed Feb. 25, 1928 3% GII WM 5MM M Patented Dec. 27, 1932nirsn srrus PATENT QFFCE'.Y

FHILIP SHERMAN RUSSEL, OF DETROIT, MICHIGAN, ASSIGNOR TO DETROITLUBRICATOR COMPANY, GF DETROIT, MECHIGAN, A CORPORATI-N F VMClFllGrJI\TSTRAENER Application led February 25, 192 Serial No. 256,833. v

My invention relates to new and useful improvements in strainers orfilters, and more particularly to a strainer or filter adapted forembodiment in a liquid conducting pipe line or other conduit.

An object of my invention is toprovide a strainer having a largefiltering area or surface.

Another object is to provide a strainer which will not trap air.

Still another object is to provide a .strainer which is efficient inoperation and of simple construction.

The invention consists in the improved construction and combination ofparts, to be more fully described hereinafter, and the novelty of whichwill be particularly pointed out and distinctly claimed.

In the accompanying drawing, to be taken as a part of thisspecification, I have fully and clearly illustrated a preferredembodiment of my invention, in which drawing- Figure 1 is a top planview of my improved strainer; Y

Fig. 2 is a vertical central section on the line 2-2 of Fig. 1;

Fig. 3 is a detail plan section on the line 3-3 of Fig. 2; l

Fig. 4 is a detail section in elevation on the line 4-4 of Fig. 1, and

Fig. 5 is a detail section in elevation on the line 5-5 of Fig. 1.

Referring to the drawing by characters of reference, 1 designatesgenerally a hollow casing having a side wall 2, preferably substantiallycylindrical, and having a head or upper end wall 3 and an open lower'end4. rlhe inside face 3a of the wall 3, preferably slopes or is inclinedslightly upward from the side wall 2 toward its center, so that it issubstantially concave. Depending substantially centrally from the face3a of the wall 3, is a boss 5 having a bore 6 forming a sleeve which isinternally threaded and coaxial with the longitudinal axis of casing 1.Abutting the annular end of boss 5 is a supporting plate 7 having acentral aperture 7 a therethrough which is alined with bore 6. The plate7 is preferably substantially'in the form of an inverted truncatedhollow cone, the base' of which lies adjacent to but spaced from thewall 3. "inserted through aperture 7a and threaded into bore G of thesleeve or boss is one end of a post or rod support member 8 having aperipheral shoulder 9 which abuts 5.'-

tion to the side wall 2, is a foraminous ele-A ment 11 which ispreferably cylindrical and a screen of fine wire mesh which extendsdownward substantially to the open casing end 4. The free end of thescreen or element 11 has secured and sealed thereto, as at 11a, asurrounding flange 12 which overlies the end of the side wall 2 at theopen end 4 of casing 1. The post 8 extendsbeyond or out of the open end4 of casing 1, and is threaded at its free end 13. Closing the open end4 of casing 1, is a cap member 14, which is substantially cupshaped,having an annular shoulder 15 on which the flange 12 seats, and alsohaving a surrounding rim or iiange 1G which surrounds the free end ofside wall 2. Between the end of wall'2 and the ange 12, and also betweenthe shoulder 15 and flange 12, l preferably' place gaskets 17 and 18,respectively. Centrally through the cap member 14 is an aperture 19,through which the free end 13 of post 8 slidably passes. rlhreaded onthe free end 13 of post 8 is acap nut 2() which engages the cap member14 to tightly clamp the flange 12 between the shoulder 15 and the end ofwall 2. 1n the cap-engaging end of the nut 20 is an annular recess 21 inwhich is a gasket 22 which abuts the cap member 14 to seal the jointbetween nut 2O and member 14. Through the head 28 of nut 2O is aninternally threaded aperture 24 which receives a screw plug 25 having asuitable gasket 26 to engage the head 23 and prevent leakage throughaperture 24. The cap member 14 may be provided with internal reinforcingribs 27, if desired. The end 13 of post Shas an axial passage 28therein, which opens into a passage 29 extending transversely throughpost 8 Within the cap member 14. At its opposite end the post 8 has anaxial passage 30 which extends beyond shoulder 9 and opens into apassage 3l which extends transversely through the post 8 and whichcommunicates at its ends with the interior of the cylindrical screen ll.Y y

External of the casing l but on the head or end wall 3 is a boss,generally designated at 32 and comprising a valve casing having acentral portion 33 from which extend arm portions 34, The portion 33 hasa cylindrical recess 36 serving as a valve chamber which is concentricwith the casing l. Opening through the base 3'? et the recess 36 is apassage 38 communicating' with the bore 6 and post passage 30. Also inthe boss 32l and opening through the base 37 are a plurality of passages39, 40 and 4l. The passage 39 extends downward through the end Wall 3where it opens at the highest point in the wall into the space in casingl around or external of the screen 11. The passages 40, 4l connect,respectively, with an inlet passage 42 and an outlet passage 43, whichare respectively in the arm portions 34, The passages 42, 43 arethreaded, as Vat 44, 45, for connection ot the strainer in a pipe lineor conduit (not shown) Seated on the base 37 is a disk valve member 46of a diameter substantially equal to the diameter of the cylindricalrecess 36. In thev i upper face of the disk member 46 is adiametricalslot 47. Through the member 46 Vis anV axial aperture 48 which opens atone end into the slot 47, and at the other end communicates with thepassage 38. The periphery of the disk member 46 has an arcuate recess49L into which projects, from the base 37, a stop piny 50 secured in asocket 5l in the central boss portion 33. Through thev member 46 is. anaperture 52 adapted to register with passage` 40, and in the undersideofthe disk..

member is an arcuate slot orpassage 53 into the opposite ends of whichthe passages 39 and 4l, respectively, open when the passage 40 andaperture 52 are in register. Threaded into the recess 36 is a sleeve orbonnet member 54 having a surrounding iiange 55 adapted to seat on theend of portion 33 and between them may be placed a gasket 55a. Themember 54 has a longitudinal bore 56 which is of enlarged diameter, asat 57. Journalled in the bore 56 is a valve stein 58 having aksurrounding flange 59 which abuts the inner end or under side of thesleeve member 54. The stem 58 projects outward beyondfthe f sleevemember 54, and at its inner end has an axial recess or socket 60.Coaxialwith the aperture 48 is a cylindrical recess (i1-1in the top ofdisk member46 and also in alinement with the socket 60. Positioned.between the stem 58 and member 46 is a resilient member respectivelyinternallyv 62, preferably a spring of the coil type, having its en dsrespectively seated in the recesses 60 and 6l, and held undercompression therebetween whereby the spring serves to hold the fiange 59against sleeve member 54, and to hold the disk member 46 against therecess base 37,Which serves as avalve seat. Depending from the stein 58are operating members or fingers 63 which project into the slot 4", but'only to a portion otits depth so as to provide flow passages beneath thefingers 63, as at 64. Hthin the enlarged bore portion 57 ofsleeve member54 is a suitable packing medium 65, which is expanded radially toprevent leakage around the stem 58 by a packing sleeve 66Whichfsurrounds stem58, and which isforced into engagement' with thepacking` medium by a packing nut.. 6T threaded on the sleeve member-`54, asat 68.'.

The operation of the strainerisas follows: Thev strainer having beenconnect-ed, in a liquid line byA means of the -inlet and loutletpassages 42, 43, respectively, and the disk:4

member 46v having been rotatedzby means of stem 58 to aline passage 40and the valve-porty or'aperture 52, which alinementis determined by the.endof arcuate. slot 49bringing up against the stop pin 50 andpreventing:fur;-v

the-r counterclockwise. rotation of thev disk member 46, asis apparentfrom Eig; 3,' thenz liquid. in the lineA will lowfronrinlet throughpassage 40 and aperture 52V into chamber 36, thence into slot 47andlbeneath lingers 63 torpost passages 30: andfSl, `thus filling thecasingql. Tithin the Casin-gl the through screen element ll.. and whenthe casing l isy lilled will flow" liquid.- will filter through passage39, arcuate slot and passage 41 to the outlet 43 and the line.A If 'thestem 58 is rotated clockwise ltill the opposite end of slot 49 abuts 4l;will.: be closed. Any sediment or foreign matter in the liquid willcollect in? cap` mem.- ber l4,.and by removing screw:` 25 may' bedrained therefrom, or4 by. removing nut 20 and screw 25 together,` thecap member 14 may be slipped olf post8 for cleaning- The strainer isparticularly. adapted, among other uses, to be employed in the oil feedline of a liquid fuel burning apparatus which is provided with an'oilsuction pump. Due tothe construction of thestrainer, namely, thecentrallyv upward sloping wall 3, the

admissionI point Jfrom the inlet passage-30H forced out of the casinglahead of thefoil and` will not be pocketed vin the casingl to=bereleased later, forv example', on: a: dropwot 'oil level or a,decrease-of hnepressure as thcpin 50, their passages 40 and dependingfrom said wall, an upwardly andr outwardly flaring plate overlying 'thefree end of said sleeve and having a central aperture ahned with saidbore, means to seal said i plate to said sleeve, a strainer elementsecured to and sealed along the periphery oi said plate, and an outletpassage leading from the interior of said casing through said end wall.

2. A device of the character described, comprising a hollow casinghaving an end wall, a sleeve having a longitudinal bore and dependingfrom said wall, plate overlying the free end of said sleeve and havingan aperture alined with said bore, a support member to seal said plateto said. sleeve, said inemberhaving a transverse open-ended passagetherethrough, a passage in said member opening into said bore andterminat'ng said transverse passage, a strainer element secured to andsealed along the periphery of said plate, an outlet passage leading fromthe interior of said casing through said end wall, and valve meanscarried by said end wall to close said outlet passage.

3. A device of the character described, comprising a hollow casinghaving'a concave end wall, a sleeve having a longitudinal bore anddepending from said wall, an upwardly and outwardly flaring plateoverlying the free end of said sleeve and having an aperture alined withsaid bore, means to seal said plate to said sleeve, a strainer elementsecured to and sealed along the periphery of said plate, and an outletpassage leading from the interior of said casing through the highestpoint oi said end wall whereby said casing will not trap air.

4. A device of the character described, comprising a hollow casinghaving an end wall, said end wall having a valve chamber and an inletpassage and an outlet passage, each oi said passages opening into saidcasing and into said chamber, said outlet passage terminating at anopening upward from the inside face of said wall whereby to preventtrapping ot' air in the casing said chamber having an inlet and anoutlet, valve means in said chamber adapted to close said inlet, and astrainer element in said casing interposed between said inlet passageand said outlet passage.

5. A device of the character described, comprising a hollow casinghaving an end wall, said end wall having a valve chamber and an inletpassage and an outlet passage, each of said passages being formed insaid end wall and opening into said casing and into said chamber, saidoutlet passage terminating at an opening upward from the inside face ofsaid wall whereby to prevent trapping oic air in the casing said chamberhav- A ing an inlet and an outlet, valve means in said chamber adaptedto close said inlet and said outlet simultaneously, said valve meanshaving an aperture therethrough registerable with said inlet for flowinto-said chamber and a strainer element in said casing interposedbetween said inlet passage and said outlet passage.

6. A device of the character described,

comprising a hollow casing having an end wall, a boss on said wallexternal to said casing, said boss having a substantially cylindricalrecess, an inlet passage opening from said recess through said end wallinto said casing, an outlet passage opening from said casing throughsaid end wall into said recess, an inlet to said recess and an outletfrom said recess, a movable valve member in said recess, said memberhaving an aperture therethrough alined with said inlet passage, a secondaperture through said member adapted to aline with said inlet to permitcommunication between said inletV and said aperture, said valve memberhaving a passage therein adapted to permit communication betweenV saidoutlet passage and said outlet when said second aperture and said inletare in register,`

means to move said valve member to place said inlet and said secondaperture into and out oi registry, and a strainer element within saidcasing` interposed between said inlet passage and said outlet passage. Y

7. A device of the character described, comprising a hollow casinghaving a substantially cylindrical side wall and having a substantiallyconcave end wall and an open end. a boss depending centrally from saidwall and having a longitudinal bore, a .support member secured in saidbore, an upwardly and. outwardly flaring plate clamped betweensaidmember and said boss, a substantially cylindrical screen secured andsealed at one end to the periphery of said plate and depending to t ieopen end of said casing, a lateral surrounding flange on the free end ofsaid screen overlying the end of said side wall, a cap member closingsaid open casing` end and engaging saidfiange, means carried by saidsupport member and acting on said cap member to clamp said flangebetween said sidewall and said cap member, an inlet passage opening intosaid cylindrical screen through said boss and said plate, and an outletpassage opening from said casing external of said screen and throughsaid end wall.

8. A device of the character described,

comprising a hollow casing having a substan-Y tially cylindrical sidewall and having a substantially concave end wall and an open end, a bossdepending centrally from said wall iso andhaving a longitudinal bore, asupport member secured in said bore, an upwardly and outwardly llaringplate clamped between saidmember and said boss. a substantiallycylindrical screen secured and sealed at one end to the periphery ofsaid plate and de pending to the open end of said casing, a lateralsurrounding lange on the free end of said screen overlying the end ofsaid side wal-l, a cap member closing said open casing end and engagingsaid flange, means carried b`y said support member and acting on saidcap member to clamp said llange between said side wal-l and said capmember, an inlet passage opening into said cylindrical screen throughsaid boss and said plate, an outlet passage opening from said casingexternal ol'` said screen and through said end wall, a valve chambercommunicating with said inlet and said outlet passages, a valve in saidchamber adapt-ed to open and close one of said passages, and meansengaging said valve whereby said valve may be operated.

9.- A device of the character described. comprising a hollow casinghaving an end wall and an open end, a plate member, a strainer-elementsecured and sealed to the periphery of said member and dependingtherefrom in laterally spaced relation to said casing and substantiallyto the open end of said casing, a supporting member clamping said platemember to said end wall, a cap member closing the open end of saidcasing and securing and sealing the free end of said element toY saidcasing, means engaging said supporting member to secure said cap memberto said casing, said casing having an inlet passage and an outletpassage, one of said passages opening within said element, and the otherof said passages opening between said element and said casing.

10.` A device of the character described, comprising a hollow casinghaving a strainer element therein, said casing having a valve chamberand passages opening from said chamber into said casing on oppositesides of said element, said casing having an inlet to said chamber andan outlet from said chamber, a valvev member in said chamber having anaperture therethrough in constant communication with one of saidpassages, said valve member having a second aperture movable into andout of registry with said inlet, said valve member having a passageoperable to permit communication between said outlet and the other ofsaid passages, and means to operate said valve member.

l1.. A device of the character described, comprising a hollow casinghaving a Y strainer element therein, said casing having a valve chamberand passages opening from said chamber into said casing on oppositesides of said element, a bonnet closing said chamber, a rotatable diskvalve member in said chamber to control said passages, a valve stemjournaled inl said bonnet and having means engaging said valve member torotate said valve member, a flange on said stem engaging the Linder sideof said bonnet, and spring means abutting said stem and said valvemembei` to seat said valve member and hold said flange in engagementwith said bonnet.

12. A device of the character described, comprising a hollow casinghaving an end wall with a recess therein having abottom wall, said endwall having an inletl and an PHILIP SHERMAN RUSSEL.

CERTIFICATE 0I" CQRRECTION.

Patent No. ,892,90. December 27, 1932.

PHILIP SHERMAN RUSSEL.

it hereby certified that error appears in rle printed specification 0fthe above rmmbere patent reqiring eorreeen as oovv's: Page 3, lines 53and 68, claims 4 and 5, respeeively, for "an" read "an"; and lines 5Sand 70, claims 4 and 5, resgseevey, aire? "easing" insert a "c0mma"; andtha the said Letters Peient simul ce read Wih these eerrecens herein matthe same may cenform to record ef rile ease in the Peteur Qfice.

Signed @mi Sealed his 28th day @f February, A. D. 1933.

4M. J. Moore, (Sea) Acting Commissioner of Patents.

